<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty {counter} function plugin
 *
 * Type:     function<br>
 * Name:     counter<br>
 * Purpose:  print out a counter value
 * @author Monte Ohrt <monte at ohrt dot com>
 * @link http://smarty.php.net/manual/en/language.function.counter.php {counter}
 *       (Smarty online manual)
 * @param array parameters
 * @param Smarty
 * @return string|null
 */
function smarty_function_counter($params, &$smarty) {
  static $counters = array();

  $name = (isset($params['name'])) ? $params['name'] : 'default';
  if (!isset($counters[$name])) {
    $counters[$name] = array(
        'start'=>1,
        'skip'=>1,
        'direction'=>'up',
        'count'=>1
    );
  }
  $counter =& $counters[$name];

  if (isset($params['start'])) {
    $counter['start'] = $counter['count'] = (int)$params['start'];
  }

  if (!empty($params['assign'])) {
    $counter['assign'] = $params['assign'];
  }

  if (isset($counter['assign'])) {
    $smarty->assign($counter['assign'], $counter['count']);
  }

  if (isset($params['print'])) {
    $print = (bool)$params['print'];
  } else {
    $print = empty($counter['assign']);
  }

  if ($print) {
    $retval = $counter['count'];
  } else {
    $retval = null;
  }

  if (isset($params['skip'])) {
    $counter['skip'] = $params['skip'];
  }

  if (isset($params['direction'])) {
    $counter['direction'] = $params['direction'];
  }

  if ($counter['direction'] == "down")
    $counter['count'] -= $counter['skip'];
  else
    $counter['count'] += $counter['skip'];

  return $retval;

}

/* vim: set expandtab: */

?>
